An underground space entrance-corridor low-carbon ventilation linkage system with a relay pressure regulating assembly

Abstract

This invention discloses a low-carbon ventilation linkage system for underground space entrances and corridors with a relay pressure regulating component. The system includes an entrance moisture interception unit, a corridor reversible ventilation unit, a relay pressure regulating component, an entrance-corridor linkage sensing unit, a moisture load control unit, an airflow anti-cancellation interlocking unit, a tiered linkage control unit, a low-carbon energy consumption coordination unit, and a system linkage control platform. The system acquires the operating status of the entrance and corridor through each sensing unit. The moisture load control unit determines the moisture interception capacity and overflow risk. When the moisture interception capacity is insufficient, the tiered linkage control unit controls the opening of the control valve, allowing the moisture load in the relay buffer chamber to enter the corridor exhaust path for auxiliary suction or isolation control. The airflow anti-cancellation interlocking unit prevents airflows from canceling each other out. This system can achieve the interception, buffering, control, backflow prevention, and low-peak collaborative regeneration of the moisture load at the entrance, reducing the risk of hot and humid air spreading into the main underground space and minimizing energy consumption accumulation.

Description

Technical Field

[0001] This invention relates to the field of ventilation technology in rail transit stations, specifically a low-carbon ventilation linkage system for underground space entrances and corridors with relay pressure regulating components. Background Technology

[0002] The entrance to an underground space is the interface where air exchange between the above-ground environment and the underground space is most frequent. In summer, during the high-humidity season, after rain, or in hot and humid regions of the south, hot and humid air in above-ground space A easily enters underground space entrance B through pedestrian traffic, escalator-induced airflow, thermal pressure differences, and external wind pressure disturbances. When this hot and humid air is not effectively treated in the entrance area, it easily diffuses along the underground connecting corridor D to areas such as the main underground space E, the underground commercial connection area F, and the transfer node G, causing problems such as local condensation, slippery floors, stuffy air, mold growth, equipment corrosion, and increased energy consumption for air conditioning dehumidification.

[0003] In existing technologies, the entrance side of underground spaces often employs methods such as air curtains, local dehumidification, condensation and moisture interception, air diversion and capture, exhaust ventilation, or moisture storage and regeneration to reduce the intrusion of hot and humid air. The connecting underground corridors, on the other hand, often utilize fixed supply and exhaust systems, variable air volume systems, CO2 concentration control systems, or ventilation and control systems based on passenger flow to improve air quality. These two types of technologies address the issues of hot and humid air intrusion at the entrance and air quality in the corridors, respectively. However, in scenarios where the entrance and corridors are continuously connected, their independent operation still has significant limitations.

[0004] On the one hand, entrance dehumidification devices typically only sense the outer dew point, entrance surface temperature, and entrance passenger flow or moisture storage status at the entrance, lacking judgment on the tidal direction of passenger flow, corridor pressure differential status, corridor air duct operation mode, and corridor environmental load within the underground connecting corridor D. When the entrance dehumidification unit is performing attached capture, enhanced dehumidification, or low-peak dehumidification, if the adjacent air duct of the underground connecting corridor D is forming air supply, exhaust, or negative pressure suction in the opposite direction, it may disrupt the entrance dehumidification path, causing the hot and humid air mass to overflow or flow back.

[0005] On the other hand, underground connecting corridor ventilation systems typically focus on CO2 concentration, personnel density, temperature and humidity, particulate matter concentration, and passenger flow direction within the corridor, but struggle to promptly grasp the moisture saturation of the entrance dehumidification unit, the air condition after dehumidification, and the moisture load overflowing from the entrance. When the entrance dehumidification capacity approaches its limit, but the corridor system continues to operate at low carbon and low air volume, the heat and moisture load may overflow the entrance boundary and enter the corridor, causing a larger area of ​​dehumidification and ventilation burden.

[0006] Furthermore, there is a lack of physical connection between the inlet moisture interception device and the corridor ventilation system. Even if the risk of moisture load overflow is detected on the inlet side, it is difficult for the corridor side to determine which section of the air duct should handle the overflowing moisture load, when to handle it, and at what airflow rate, as well as how to avoid airflow short-circuiting, moisture backflow, or the inlet exhaust and corridor airflow canceling each other out during the connection process. If the inlet device and the corridor system operate independently and intensified, there may be an overlap of energy consumption due to the simultaneous high-power operation of the inlet exhaust fan and the corridor ventilation system, which is inconsistent with the goal of low-carbon operation. Summary of the Invention

[0007] The purpose of this invention is to overcome or at least partially solve the above-mentioned problems by proposing a low-carbon ventilation linkage system for underground space entrances and corridors with a relay pressure regulating component.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a low-carbon ventilation linkage system for underground space entrances and corridors with a relay pressure regulating component, comprising:

[0009] The entrance moisture interception unit is located at entrance B of the underground space and is used to intercept, store, or expel the incoming hot and humid air mass.

[0010] The reversible ventilation unit for the corridor is installed in the underground connecting corridor D and is used to supply air, exhaust air, induce air at low speed, or control the closure of the air in the corridor.

[0011] The relay pressure regulating component is installed in the relay transition zone C between the underground space entrance B and the underground connecting corridor D, and is located between the entrance moisture interception unit and the corridor reversible ventilation unit. It is used to sample, buffer, connect, regulate pressure and prevent backflow of the overflow moisture load on the downstream side of the entrance moisture interception unit.

[0012] The entrance-corridor linkage sensing unit is used to acquire the entrance heat and humidity load status, entrance moisture interception status, corridor passenger flow tidal status, and corridor environmental load status.

[0013] The wet load takeover determination unit is used to determine whether the corridor reversible ventilation unit should take over the inlet overflow wet load based on the inlet moisture interception capacity, wet load overflow risk, corridor takeover conditions and low-peak regeneration window.

[0014] The airflow anti-cancellation interlocking unit is used to check whether the airflow direction or exhaust direction of the inlet moisture interception unit conflicts with the air supply and exhaust direction of the corridor reversible ventilation unit, and to prohibit mutually canceling operation combinations.

[0015] The hierarchical linkage control unit is used to control the system to switch between independent inlet dehumidification, corridor auxiliary suction, inlet isolation connection, low-peak collaborative regeneration and emergency priority.

[0016] The low-carbon energy consumption coordination unit is used to determine the operating priority of the inlet moisture interception unit and the corridor reversible ventilation unit based on the inlet dehumidification energy consumption, corridor ventilation energy consumption and exhaust capacity.

[0017] The system linkage control platform is used to receive sensing data, generate linkage control strategies, and output execution commands to the inlet moisture interception unit, the corridor reversible ventilation unit, and the relay pressure regulating component.

[0018] The relay pressure regulating component includes an inlet overflow sampling port, a relay buffer chamber, a pipe air valve, a backflow prevention component, and a differential pressure detection component. When the wet load pipe determination unit determines that the inlet moisture interception capacity is insufficient or the risk of wet load overflow increases, the graded linkage control unit controls the pipe air valve to open, so that the wet load in the relay buffer chamber enters the exhaust path of the corridor reversible ventilation unit through the pipe air valve, and is then assisted in suction or isolated from the pipe by the corridor reversible ventilation unit.

[0019] Preferably, the inlet moisture interception unit includes a humid and hot air mass inlet component, an attachment and capture component, a moisture storage component, an inlet low-peak moisture exhaust component, and an inlet moisture interception status detection component; the inlet moisture interception status detection component is used to detect the humidity of the air after moisture interception, the dew point of the air after moisture interception, or the moisture interception operation status of the inlet moisture interception unit.

[0020] Preferably, the reversible ventilation unit of the corridor includes a reversible air duct component, an air supply and exhaust switching component, a corridor air supply branch, a corridor exhaust branch, and a corridor air duct status detection component; the reversible air duct component can switch between air supply state, exhaust state, low-speed induction state, and closed state.

[0021] Preferably, the relay pressure regulating component further includes a bypass regeneration interface and a relay dehumidification branch; the bypass regeneration interface is used to connect the inlet low-peak dehumidification component with the relay dehumidification branch or the corridor exhaust branch, and the relay dehumidification branch is used to guide the wet load in the relay buffer chamber into the corridor exhaust branch or the independent dehumidification pipe.

[0022] Preferably, the inlet overflow sampling port is located downstream of the inlet moisture interception unit to detect the humidity, temperature, dew point, or moisture content of the air that still migrates towards the underground connecting corridor D after being treated by the inlet moisture interception unit; the relay buffer chamber is located in the relay transition zone C between the underground space inlet B and the underground connecting corridor D to temporarily store, equalize, and guide the inlet overflow moisture load; the connecting air valve is located between the relay buffer chamber and the corridor exhaust branch, the relay dehumidification branch, or the corridor reversible ventilation unit, and can be opened, closed, or adjusted in stages according to the instructions of the moisture load connecting judgment unit; the anti-backflow check component is located between the relay buffer chamber and the underground connecting corridor D, the bypass regeneration interface, or the relay dehumidification branch to prevent the hot and humid airflow from flowing back to the underground main space E when the dehumidification is at low peak or the corridor exhaust status changes; the differential pressure detection device is used to detect the differential pressure between the underground space inlet B, the relay buffer chamber, and the underground connecting corridor D, and transmits the differential pressure detection result to the moisture load connecting judgment unit and the airflow anti-counteracting interlock unit.

[0023] Preferably, the entrance-corridor linkage sensing unit includes an outer dew point detection component, an entrance surface temperature detection component, an entrance passenger flow detection component, a corridor passenger flow tide detection component, a corridor environmental load detection component, and a moisture saturation detection component, which are used to collect the outer dew point of the ground space, the entrance surface temperature, the real-time entrance passenger flow, the corridor passenger flow tide status, the corridor environmental load status, and the moisture saturation, respectively, and transmit them to the moisture load control unit for determination;

[0024] The wet load control unit includes an inlet wet interception capacity determination module, a wet load overflow risk determination module, a corridor control demand determination module, a low-peak regeneration window determination module, and a control level determination module. It is used to determine the inlet wet interception capacity margin, wet load overflow risk, corridor control demand, and low-peak regeneration window in sequence based on the data collected by the inlet-corridor linkage sensing unit. The control level determination module then outputs the control level instruction to the hierarchical linkage control unit.

[0025] Preferably, the airflow anti-cancellation interlocking unit includes an inlet flow direction identification module, a corridor air duct direction verification module, a dehumidification anti-backflow control module, a supply and exhaust air interlocking module, and a conflict operation prohibition module, which are used to identify the airflow direction on the inlet side, verify the supply and exhaust air direction on the corridor side, and output an airflow conflict prohibition signal to the hierarchical linkage control unit.

[0026] The hierarchical linkage control unit includes a primary inlet independent dehumidification control module, a secondary corridor auxiliary suction control module, a tertiary inlet isolation pipe control module, a low-peak collaborative regeneration control module, and an emergency priority control module. It is used to control the inlet dehumidification unit, relay pressure regulating component, and corridor reversible ventilation unit to switch to the corresponding operating mode according to the pipe level instruction and airflow conflict prohibition signal.

[0027] Preferably, the low-carbon energy consumption coordination unit includes an inlet dehumidification energy consumption detection module, a corridor ventilation energy consumption detection module, a low-carbon operation priority calculation module, an energy consumption feedback correction module, and an exhaust air capacity judgment module, which are used to detect inlet dehumidification energy consumption and corridor ventilation energy consumption, judge the corridor exhaust air capacity, and output a low-carbon operation priority correction signal to the hierarchical linkage control unit.

[0028] The system linkage control platform includes a data receiving module, a strategy generation module, an execution control module, an operation recording module, and a fault alarm module. The data receiving module is used to receive data from the entrance-corridor linkage sensing unit, the wet load take-off judgment unit, the airflow anti-counteracting interlock unit, and the low-carbon energy consumption coordination unit. The strategy generation module is used to generate linkage control strategies. The execution control module is used to output execution commands to the entrance moisture interception unit, the corridor reversible ventilation unit, and the relay pressure regulating component.

[0029] Preferably, the hierarchical linkage control unit controls according to the following mode:

[0030] Independent moisture interception mode at the primary inlet: When the moisture saturation of the inlet moisture interception unit is lower than the set threshold, the humidity of the air after moisture interception detected by the inlet overflow sampling port is lower than the set threshold, and the humidity of the relay buffer chamber does not increase, the independent moisture interception control module at the primary inlet controls the inlet moisture interception unit to operate independently, the corridor reversible ventilation unit maintains a low-speed induction or peak low-carbon state, and the pipe air valve is closed or slightly open.

[0031] Secondary corridor auxiliary suction mode: When the inlet overflow sampling port detects an increase in humidity and the wet load in the relay buffer chamber begins to accumulate, the secondary corridor auxiliary suction control module controls the pipe air valve to partially open, and the reversible air duct component adjacent to the underground space entrance B in the corridor reversible ventilation unit switches to a micro negative pressure suction state, while the deep underground connecting corridor D maintains a low-speed induction state.

[0032] Three-level inlet isolation pipe connection mode: When the inlet moisture interception unit is close to saturation, the humidity of the relay buffer chamber continues to rise, and the differential pressure detection device detects that the airflow has a tendency to diffuse to the depth of the underground connecting corridor D, the three-level inlet isolation pipe connection control module controls the pipe air valve to be fully opened or opened in stages, forming a micro negative pressure suction zone in the section adjacent to the underground space inlet B, forming a micro positive pressure barrier in the depth of the underground connecting corridor D, and the backflow prevention and check mechanism is activated.

[0033] Low-peak collaborative regeneration mode: When the entrance passenger flow decreases, the outer dew point drops, the moisture storage component needs to be regenerated, and the corridor exhaust branch has exhaust capacity, the low-peak collaborative regeneration control module controls the entrance low-peak dehumidification component, bypass regeneration interface, relay dehumidification branch and corridor exhaust branch to operate collaboratively, and the reversible wind duct component adjacent to the corridor switches to the same direction exhaust, closed or anti-backflow state.

[0034] Preferably, the inlet moisture interception capacity determination module determines whether the inlet moisture interception unit can independently handle the current moisture and heat load based on the outer dew point, inlet surface temperature, air humidity after inlet moisture interception, and moisture saturation; the moisture load overflow risk determination module determines whether there is a risk of moisture and heat load overflowing into the underground connecting corridor D based on the detection results of the inlet overflow sampling port, the humidity of the relay buffer chamber, the detection results of the differential pressure detection device, the inlet passenger flow intensity, and the humidity gradient of the adjacent section of the corridor; the low-peak regeneration window determination module determines whether the inlet low-peak moisture exhaust component is allowed to perform low-peak collaborative regeneration through the bypass regeneration interface and the relay moisture exhaust branch based on the inlet passenger flow intensity, outer dew point, corridor differential pressure status, exhaust capacity of the corridor exhaust branch, and system energy consumption status; the connection level determination module determines whether the system enters the first-level inlet independent moisture interception, the second-level corridor auxiliary suction, or the third-level inlet isolation connection based on the above determination results.

[0035] The airflow anti-counteracting interlocking unit is interlocked and controlled according to the following logic: when the inlet moisture interception unit is in the attached moisture interception state, the conflict operation prohibition module prohibits the reversible air duct component adjacent to the underground space entrance B in the corridor reversible ventilation unit from strongly supplying air to the underground space entrance B; when the inlet low-peak dehumidification component is running, the dehumidification anti-backflow control module prohibits the corridor reversible ventilation unit from forming a negative pressure path that draws the dehumidified airflow back to the underground main space E; when the corridor enters the emergency smoke exhaust state, the supply and exhaust interlocking module and the conflict operation prohibition module control the inlet low-peak dehumidification component to suspend operation;

[0036] The low-carbon energy consumption coordination unit's low-carbon operation priority calculation module determines the operation priorities of the inlet moisture interception unit, relay pressure regulating component, and corridor reversible ventilation unit based on inlet dehumidification energy consumption, corridor ventilation energy consumption, inlet moisture load overflow risk, corridor environmental load, and exhaust capacity. When the inlet moisture interception capacity is sufficient, corridor intervention is reduced; when the overflow risk increases, only adjacent corridor sections are controlled to connect, avoiding high-volume operation throughout the corridor. The system features a primary inlet independent moisture interception mode, a secondary corridor auxiliary suction mode, a tertiary inlet isolation connection mode, and a low-carbon energy consumption coordination unit. The system includes three modes: peak-coordinated regeneration mode, corridor-priority ventilation mode, and emergency-priority mode. In corridor-priority ventilation mode, the entrance dehumidification unit remains in standby or low-speed monitoring, the relay pressure regulating component remains closed or in monitoring mode, and the corridor reversible ventilation unit controls air supply, exhaust, low-speed induction, or closure according to the corridor passenger flow tide and environmental load. In emergency-priority mode, the system suspends the low-carbon priority strategy, and the entrance dehumidification unit, relay pressure regulating component, and corridor reversible ventilation unit all comply with the fire smoke exhaust and personnel evacuation safety logic, and the entrance low-peak dehumidification component suspends operation.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention sets up a relay pressure regulating component between the underground space entrance B and the underground connecting corridor D, so that the overflow moisture load on the downstream side of the entrance moisture interception unit can be sampled, buffered, connected and pressure regulated before entering the underground connecting corridor D, thereby preventing the hot and humid airflow from directly entering the underground main space E.

[0039] This invention uses a wet load control determination unit to comprehensively assess the inlet moisture interception capacity, wet load overflow risk, corridor control requirements, and low-peak regeneration window, enabling the system to switch between independent inlet moisture interception, corridor auxiliary suction, and inlet isolation control in stages according to the actual wet load status.

[0040] This invention uses an airflow anti-cancellation interlocking unit to check the inlet guiding direction, inlet dehumidification direction, and corridor air duct supply and exhaust direction, prohibiting mutually canceling operation combinations, and preventing the inlet dehumidification airflow from being destroyed by the corridor air supply, or the inlet dehumidification airflow from being sucked back into the underground space by the corridor negative pressure.

[0041] This invention enables low-peak collaborative regeneration control module and bypass regeneration interface to make inlet low-peak dehumidification no longer operate solely based on inlet passenger flow or inlet humidity, but rather to coordinate dehumidification by combining corridor pressure differential status, exhaust air capacity, outer dew point, and energy consumption status, thereby reducing the risk of dehumidification backflow and energy consumption accumulation.

[0042] This invention coordinates the energy consumption of inlet dehumidification and corridor ventilation through a low-carbon energy consumption coordination unit. When the inlet dehumidification capacity is sufficient, corridor intervention is reduced. When the risk of spillover increases, only the adjacent corridor section is controlled to take over, thus avoiding high-volume operation of the entire corridor.

[0043] In emergency priority mode, this invention can suspend the low-carbon priority strategy, so that the entrance moisture interception unit, relay pressure regulating component and corridor reversible ventilation unit obey the safety logic of fire smoke exhaust and personnel evacuation, and protect the safety boundary of underground space. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall system composition of the present invention;

[0045] Figure 2 This is a schematic diagram of the spatial relationship between the entrance, relay transition area, and corridor of this invention.

[0046] Figure 3 This is a schematic diagram of the relay voltage regulating component structure of the present invention;

[0047] Figure 4 This is the logic diagram for determining the wet load connection in this invention;

[0048] Figure 5 This is a schematic diagram of the airflow anti-cancellation interlock of the present invention;

[0049] Figure 6 This is a schematic diagram of the three-level takeover mode of the present invention;

[0050] Figure 7 This is a schematic diagram of the low-peak collaborative regeneration mode of the present invention;

[0051] Figure 8 This is a flowchart of the system linkage control of the present invention;

[0052] Figure 9 This is a schematic diagram of the airflow anti-cancellation operation prohibition combination of the present invention.

[0053] In the diagram: 1. Inlet moisture interception unit; 2. Corridor reversible ventilation unit; 3. Relay pressure regulating component; 4. Inlet-corridor linkage sensing unit; 5. Moisture load control unit; 6. Airflow anti-cancellation interlocking unit; 7. Hierarchical linkage control unit; 8. Low-carbon energy consumption coordination unit; 9. System linkage control platform;

[0054] 3-1. Inlet overflow sampling port; 3-2. Relay buffer chamber; 3-3. Pipeline air valve; 3-4. Anti-backflow check valve component; 3-5. Differential pressure detection component; 3-6. Bypass regeneration interface; 3-7. Relay dehumidification branch; 5-1. Inlet moisture interception capacity determination module; 5-2. Moisture load overflow risk determination module; 5-3. Corridor pipeline connection requirement determination module; 5-4. Low-peak regeneration window determination module; 5-5. Pipeline connection level determination module; 6-1. Inlet flow direction identification module; 6-2. Corridor 6-3. Air duct direction verification module; 6-4. Dehumidification and backflow prevention control module; 6-5. Supply and exhaust interlock module; 6-6. Conflict operation prohibition module; 7-1. Primary inlet independent dehumidification control module; 7-2. Secondary corridor auxiliary suction control module; 7-3. Tertiary inlet isolation pipe control module; 7-4. Low-peak collaborative regeneration control module; 9-1. Data receiving module; 9-2. Strategy generation module; 9-3. Execution control module; 9-4. Operation record module; 9-5. Fault alarm module. Detailed Implementation

[0055] The present invention will be further described in detail below with reference to the accompanying drawings.

[0056] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this description, those skilled in the art can make creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0057] This invention discloses a low-carbon ventilation linkage system for underground space entrances and corridors with a relay pressure regulating component, which solves the technical problems in the prior art. The overall concept is as follows:

[0058] Example 1

[0059] like Figure 1 and Figure 2As shown in the figure, a low-carbon ventilation linkage system with a relay pressure regulating component for underground space entrance-corridor is installed between underground space entrance B and underground connecting corridor D in this embodiment. The humid and hot air from above-ground space A enters the relay transition zone C through underground space entrance B. The relay transition zone C is connected to the underground connecting corridor D, which further connects to the underground main space E, the underground commercial connection area F, and the transfer node G.

[0060] The inlet moisture interception unit 1 is located at the underground space entrance B and is used to pre-intercept, store, and expel humid and hot air masses entering the underground space. The corridor reversible ventilation unit 2 is located in the underground connecting corridor D and is used for air supply, exhaust, low-speed induction, and closure control of the underground connecting corridor D. The relay pressure regulating component 3 is located in the relay transition zone C between the underground space entrance B and the underground connecting corridor D, and serves as the physical connection interface between the inlet moisture interception unit 1 and the corridor reversible ventilation unit 2.

[0061] The entrance-corridor linkage sensing unit 4 collects data from the entrance side, the transition zone C, and the corridor side. The wet load takeover determination unit 5 determines whether the wet load needs to be taken over by the corridor reversible ventilation unit 2 based on the above data. The airflow anti-cancellation interlocking unit 6 checks whether there is a conflict between the airflow on the entrance side and the airflow on the corridor side. The hierarchical linkage control unit 7 controls the system to enter different modes based on the determination results. The low-carbon energy consumption coordination unit 8 coordinates the energy consumption of entrance dehumidification and corridor ventilation. The system linkage control platform 9 is used for data reception, strategy generation, execution control, operation recording, and fault alarms.

[0062] Example 2

[0063] like Figure 3 As shown, the relay pressure regulating component 3 includes an inlet overflow sampling port 3-1, a relay buffer chamber 3-2, a pipe air valve 3-3, a backflow prevention check component 3-4, a differential pressure detection component 3-5, a bypass regeneration interface 3-6, and a relay dehumidification branch 3-7.

[0064] The inlet overflow sampling port 3-1 is located downstream of the inlet moisture-cutting unit 1 and is used to collect the air condition after being processed by the inlet moisture-cutting unit 1. If the inlet moisture-cutting unit 1 can no longer adequately retain the moisture and heat load, the air humidity, dew point, or moisture content detected by the inlet overflow sampling port 3-1 will increase.

[0065] The relay buffer chamber 3-2 is located between the inlet moisture interception unit 1 and the underground connecting corridor D, and is used to temporarily store and equalize the moisture load overflowing from the inlet. The relay buffer chamber 3-2 can be a short section of air duct, a lateral buffer chamber, a mezzanine cavity, or a local expansion chamber at the junction of the inlet and corridor. Its function is to change the hot and humid airflow from "directly entering the corridor" to "first entering the buffer chamber and waiting for the receiver to take over".

[0066] The connecting air valve 3-3 is installed between the relay buffer chamber 3-2 and the relay dehumidification branch 3-7, the corridor exhaust branch, or the corridor reversible ventilation unit 2. The connecting air valve 3-3 can be closed, opened to a small degree, partially opened, or fully opened according to the instructions of the connecting level determination module 5-5.

[0067] Backflow prevention component 3-4 is installed between relay buffer chamber 3-2 and underground connecting corridor D, relay dehumidification branch 3-7 or bypass regeneration interface 3-6 to prevent hot and humid airflow from flowing back to the underground main space E when the airflow direction is reversed.

[0068] Differential pressure detection components 3-5 detect the differential pressure between the underground space entrance B, the relay buffer chamber 3-2, and the underground connecting corridor D, respectively, to determine whether there is a tendency for hot and humid air to diffuse deeper into the corridor.

[0069] The bypass regeneration interface 3-6 is used to connect the inlet low-peak dehumidification component to the relay dehumidification branch 3-7 or the corridor exhaust branch in the low-peak collaborative regeneration mode. The relay dehumidification branch 3-7 is used to introduce the wet load in the relay buffer chamber 3-2 into the corridor exhaust branch or independent dehumidification pipe.

[0070] Example 3

[0071] like Figure 4 As shown, the wet load connection determination unit 5 includes an inlet wet interception capacity determination module 5-1, a wet load overflow risk determination module 5-2, a corridor connection demand determination module 5-3, a low-peak regeneration window determination module 5-4, and a connection level determination module 5-5.

[0072] The inlet moisture interception capacity determination module 5-1 determines whether the inlet moisture interception unit 1 can independently handle the current damp heat load based on the data from the outer dew point detection component, the inlet surface temperature detection component, the inlet moisture interception status detection component, and the moisture storage saturation detection component.

[0073] The moisture load overflow risk assessment module 5-2 determines whether there is a risk of moisture and heat load spreading to the depth of the underground connecting corridor D based on the data from the inlet overflow sampling port 3-1, the humidity and differential pressure detection component 3-5 in the relay buffer chamber 3-2, the inlet passenger flow detection component, and the corridor environmental load detection component.

[0074] The corridor connection demand determination module 5-3 determines whether it is necessary to activate the corridor reversible ventilation unit 2 for auxiliary suction or isolation connection based on the risk of moisture load overflow and the operating status of the corridor reversible ventilation unit 2.

[0075] The low-peak regeneration window determination module 5-4 determines whether the low-peak dehumidification component at the entrance is allowed to perform low-peak coordinated regeneration through the bypass regeneration interface 3-6 and the relay dehumidification branch 3-7 based on the entrance passenger flow, outer dew point, corridor pressure difference, exhaust air capacity and energy consumption status.

[0076] Based on the above determination results, the takeover level determination module 5-5 determines whether the system enters the first-level entrance independent moisture interception, the second-level corridor auxiliary suction, or the third-level entrance isolation takeover.

[0077] Example 4

[0078] like Figure 5 and Figure 9 As shown, the airflow anti-counteracting interlocking unit 6 includes an inlet guide direction identification module 6-1, a corridor air duct direction verification module 6-2, a dehumidification anti-backflow control module 6-3, a supply and exhaust air interlock module 6-4, and a conflict operation prohibition module 6-5.

[0079] When the inlet moisture interception unit 1 is in the attached moisture interception state, the inlet flow direction identification module 6-1 identifies the flow direction of the humid and hot air mass, and the corridor air duct direction verification module 6-2 verifies the supply and exhaust air direction of the adjacent reversible air duct component. If the adjacent air duct strongly supplies air to the underground space entrance B, it will disrupt the attachment and capture path of the humid and hot air mass. The conflict operation prohibition module 6-5 prohibits this operation combination and allows the adjacent air duct to enter the low-speed induction or micro-negative pressure suction state.

[0080] When the inlet low-peak dehumidification component is running, the dehumidification backflow prevention control module 6-3 determines whether a negative pressure path is formed in the adjacent section of the corridor that could potentially draw the dehumidified airflow back into the underground main space E. If there is a risk of backflow, the system prohibits low-peak collaborative regeneration, or adjusts the adjacent air ducts of the corridor to a state of unidirectional exhaust, closure, or slight positive pressure isolation.

[0081] When the corridor enters the emergency smoke exhaust state, the supply and exhaust interlock module 6-4 and the conflict operation prohibition module 6-5 control the low-peak dehumidification component at the entrance to suspend operation, so as to avoid the low-peak dehumidification airflow at the entrance from interfering with the emergency smoke exhaust path.

[0082] Example 5

[0083] like Figure 6 As shown, when the moisture saturation of the inlet moisture interception unit 1 is lower than the set threshold, the humidity of the air after moisture interception detected by the inlet overflow sampling port 3-1 is lower than the set threshold, the humidity of the relay buffer chamber 3-2 does not increase, and the environmental load in the underground connecting corridor D is normal, the system enters the first-level inlet independent moisture interception mode.

[0084] In this mode, the inlet dehumidification unit 1 is activated, the connecting air valve 3-3 is closed or slightly open, and the corridor reversible ventilation unit 2 maintains a low-speed induction or peak-hour low-carbon state. The airflow anti-counteracting interlock unit 6 prohibits strong airflow from the adjacent air ducts of the corridor to the inlet side. In this mode, the humidity and heat load is mainly handled independently by the inlet dehumidification unit 1, and the corridor system does not intervene in advance to reduce system energy consumption.

[0085] When the humidity rises at the inlet overflow sampling port 3-1, the moisture load begins to accumulate in the relay buffer chamber 3-2, the inlet moisture interception unit 1 has not yet reached saturation, and the adjacent section of the corridor is ready for pipe connection, the system enters the secondary corridor auxiliary suction mode.

[0086] In this mode, the inlet moisture interception unit 1 enhances moisture interception, the connecting air valve 3-3 partially opens, and the reversible air duct component adjacent to the underground space entrance B in the corridor reversible ventilation unit 2 switches to a slightly negative pressure suction state. The overflow moisture load in the relay buffer chamber 3-2 enters the corridor exhaust branch or adjacent exhaust path via the relay exhaust branch 3-7. The deep underground connecting corridor D maintains a low-speed induction state. This mode achieves relay between inlet moisture interception and corridor suction without requiring large-volume exhaust throughout the corridor.

[0087] When the moisture saturation detection component shows that the inlet moisture interception unit 1 is close to saturation, the humidity of the inlet overflow sampling port 3-1 and the relay buffer chamber 3-2 continues to rise, and the differential pressure detection component 3-5 detects that the airflow has a tendency to diffuse into the depth of the underground connecting corridor D, the system enters the three-level inlet isolation and control mode.

[0088] In this mode, the connecting air valve 3-3 is fully open or opened in stages, forming a wet load isolation zone between the underground space entrance B and the front end of the underground connecting corridor D. The reversible air duct components in the adjacent section of the corridor switch to exhaust or slightly negative pressure suction mode, and the reversible air duct components deep in the underground connecting corridor D form a slightly positive pressure barrier to prevent the humid heat load from continuing to spread to the underground main space E. The backflow prevention component 3-4 is activated, and the conflict operation prohibition module 6-5 prohibits the exhaust of air from the deep corridor towards the entrance.

[0089] This mode is suitable for operating conditions where the outer dew point is high, the inlet passenger flow is high, the inlet moisture interception unit 1 is close to saturation, or the inlet moisture load overflows strongly.

[0090] Example 6

[0091] like Figure 7 As shown, when the entrance passenger flow decreases, the outer dew point decreases, the moisture storage component needs to be regenerated, the corridor exhaust branch has exhaust capacity, and the differential pressure detection device 3-5 shows that there is no risk of moisture backflow, the system enters the low-peak collaborative regeneration mode.

[0092] In this mode, the inlet low-peak dehumidification component is activated, the bypass regeneration interface 3-6 is opened, and the relay dehumidification branch 3-7 connects to the corridor exhaust branch 2-4 or an independent dehumidification pipe. The reversible air duct component adjacent to the corridor switches to unidirectional exhaust, closed, or anti-backflow state. The dehumidification anti-backflow control module 6-3 continuously monitors the dehumidification direction to prevent moisture from being drawn back into the underground main space E.

[0093] This mode allows the moisture load at the entrance to be discharged during periods of low passenger flow and low load, and avoids conflicts between entrance dehumidification and corridor ventilation.

[0094] Example 7

[0095] When the entrance wet load is low, and the CO2 concentration, particulate matter concentration, passenger flow retention load, or environmental load of the transfer node G in the underground connecting corridor D is high, the system enters the corridor priority ventilation mode.

[0096] In this mode, the entrance dehumidification unit 1 remains in standby or low-speed monitoring, the relay pressure regulating component 3 remains closed or in monitoring mode, and the corridor reversible ventilation unit 2 controls air supply, exhaust, low-speed induction, or closure according to the corridor passenger flow tide and environmental load. This mode avoids ineffective operation of the entrance system and prioritizes addressing air quality issues within the corridor.

[0097] Example 8

[0098] When a fire, smoke, equipment failure, personnel evacuation, or other emergency occurs in the underground space, the system enters emergency priority mode.

[0099] In this mode, the emergency priority control module is activated, and the system suspends the low-carbon priority strategy. The inlet dehumidification unit 1, relay pressure regulating component 3, and corridor reversible ventilation unit 2 all comply with fire smoke extraction and personnel evacuation safety logic. The inlet low-peak dehumidification component suspends operation, and the connecting air valve 3-3, backflow prevention component 3-4, and corridor reversible ventilation unit 2 switch according to the emergency plan. This mode ensures that the low-carbon ventilation linkage system does not interfere with the safe operation of the underground space.

[0100] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A low-carbon ventilation linkage system for underground space entrances and corridors with a relay pressure regulating component, characterized in that, include: The entrance moisture interception unit (1) is set at the entrance B of the underground space and is used to intercept, store or discharge the incoming hot and humid air mass. The corridor reversible ventilation unit (2) is installed in the underground connecting corridor D and is used to supply, exhaust, induce or close the air in the corridor. The relay pressure regulating component (3) is set in the relay transition zone C between the underground space entrance B and the underground connecting corridor D, and is located between the entrance moisture interception unit (1) and the corridor reversible ventilation unit (2). It is used to sample, buffer, connect, regulate pressure and prevent backflow of the overflow moisture load on the downstream side of the entrance moisture interception unit (1). The entrance-corridor linkage sensing unit (4) is used to obtain the entrance heat and humidity load status, entrance moisture interception status, corridor passenger flow tidal status and corridor environmental load status. The wet load takeover determination unit (5) is used to determine whether the corridor reversible ventilation unit (2) takes over the inlet overflow wet load based on the inlet moisture interception capacity, wet load overflow risk, corridor takeover conditions and low-peak regeneration window. The airflow anti-cancellation interlocking unit (6) is used to check whether the guiding direction or exhaust direction of the inlet moisture interception unit (1) conflicts with the supply and exhaust direction of the corridor reversible ventilation unit (2), and prohibits mutually canceling operation combinations. The hierarchical linkage control unit (7) is used to control the system to switch between independent inlet dehumidification, corridor auxiliary suction, inlet isolation pipe connection, low-peak collaborative regeneration and emergency priority. The low-carbon energy consumption coordination unit (8) is used to determine the operating priority of the inlet moisture interception unit (1) and the corridor reversible ventilation unit (2) based on the inlet dehumidification energy consumption, corridor ventilation energy consumption and exhaust capacity. The system linkage control platform (9) is used to receive sensing data, generate linkage control strategies, and output execution commands to the inlet moisture interception unit (1), the corridor reversible ventilation unit (2), and the relay pressure regulating component (3); The relay pressure regulating component (3) includes an inlet overflow sampling port (3-1), a relay buffer chamber (3-2), a pipe air valve (3-3), a backflow prevention component (3-4), and a differential pressure detection component (3-5). When the wet load pipe judgment unit (5) determines that the inlet moisture interception capacity is insufficient or the risk of wet load overflow increases, the graded linkage control unit (7) controls the pipe air valve (3-3) to open, so that the wet load in the relay buffer chamber (3-2) enters the exhaust path of the corridor reversible ventilation unit (2) through the pipe air valve (3-3), and is then assisted in suction or isolated pipe by the corridor reversible ventilation unit (2).

2. The low-carbon ventilation linkage system for underground space entrance-corridor with relay pressure regulating components according to claim 1, characterized in that, The inlet moisture interception unit (1) includes a humid heat air mass introduction component, an attachment and capture component, a moisture storage component, an inlet low-peak moisture discharge component, and an inlet moisture interception status detection component; The inlet moisture interception status detection component is used to detect the moisture interception air humidity, moisture interception air dew point, or moisture interception operation status of the inlet moisture interception unit (1).

3. A low-carbon ventilation linkage system for underground space entrance-corridor with relay pressure regulating components as described in claim 1, characterized in that, The reversible ventilation unit (2) of the corridor includes a reversible air duct component, an air supply and exhaust switching component, a corridor air supply branch, a corridor exhaust branch, and a corridor air duct status detection component; the reversible air duct component can switch between air supply state, air exhaust state, low speed induction state, and closed state.

4. A low-carbon ventilation linkage system for underground space entrance-corridor with relay pressure regulating components according to claim 1, characterized in that, The relay pressure regulating component (3) also includes a bypass regeneration interface (3-6) and a relay dehumidification branch (3-7); the bypass regeneration interface (3-6) is used to connect the inlet low-peak dehumidification component with the relay dehumidification branch (3-7) or the corridor exhaust branch, and the relay dehumidification branch (3-7) is used to introduce the wet load in the relay buffer chamber (3-2) into the corridor exhaust branch or the independent dehumidification pipe.

5. A low-carbon ventilation linkage system for underground space entrance-corridor with a relay pressure regulating component as described in claim 4, characterized in that, The inlet overflow sampling port (3-1) is located downstream of the inlet moisture interception unit (1) and is used to detect the humidity, temperature, dew point, or moisture content of the air that still migrates towards the underground connecting corridor D after being processed by the inlet moisture interception unit (1). The relay buffer chamber (3-2) is located in the relay transition zone C between the underground space entrance B and the underground connecting corridor D and is used to temporarily store, equalize, and guide the inlet overflow moisture load. The connecting air valve (3-3) is located between the relay buffer chamber (3-2) and the corridor exhaust branch, the relay moisture exhaust branch (3-7), or the corridor reversible ventilation unit (2), and can be connected according to the moisture load. The pipe determination unit (5) is instructed to open, close or adjust the opening degree in stages; the anti-backflow check component (3-4) is set between the relay buffer chamber (3-2) and the underground connecting corridor D, the bypass regeneration interface (3-6) or the relay dehumidification branch (3-7) to prevent the hot and humid airflow from flowing back to the underground main space E when the dehumidification or corridor ventilation status changes; the differential pressure detection component (3-5) is used to detect the differential pressure between the underground space entrance B, the relay buffer chamber (3-2) and the underground connecting corridor D, and transmit the differential pressure detection result to the wet load pipe determination unit (5) and the airflow anti-counteracting interlock unit (6).

6. A low-carbon ventilation linkage system for underground space entrance-corridor with relay pressure regulating components according to claim 5, characterized in that, The entrance-corridor linkage sensing unit (4) includes an outer dew point detection component, an entrance surface temperature detection component, an entrance passenger flow detection component, a corridor passenger flow tide detection component, a corridor environmental load detection component, and a moisture saturation detection component, which are used to collect the outer dew point of the ground space, the entrance surface temperature, the real-time passenger flow at the entrance, the corridor passenger flow tide status, the corridor environmental load status, and the moisture saturation, respectively, and transmit them to the moisture load control and judgment unit (5). The wet load control unit (5) includes an inlet wet interception capacity determination module (5-1), a wet load overflow risk determination module (5-2), a corridor control demand determination module (5-3), a low-peak regeneration window determination module (5-4), and a control level determination module (5-5). It is used to determine the inlet wet interception capacity margin, wet load overflow risk, corridor control demand, and low-peak regeneration window in sequence based on the data collected by the inlet-corridor linkage sensing unit (4). The control level determination module (5-5) outputs the control level instruction to the hierarchical linkage control unit (7).

7. A low-carbon ventilation linkage system for underground space entrance-corridor with a relay pressure regulating component as described in claim 6, characterized in that, The airflow anti-counteracting interlocking unit (6) includes an inlet flow direction identification module (6-1), a corridor air duct direction verification module (6-2), a dehumidification anti-backflow control module (6-3), a supply and exhaust air interlock module (6-4), and a conflict operation prohibition module (6-5), which are used to identify the airflow direction on the inlet side, verify the supply and exhaust air direction on the corridor side, and output an airflow conflict prohibition signal to the hierarchical linkage control unit (7); The hierarchical linkage control unit (7) includes a first-level inlet independent dehumidification control module (7-1), a second-level corridor auxiliary suction control module (7-2), a third-level inlet isolation pipe control module (7-3), a low-peak collaborative regeneration control module (7-4), and an emergency priority control module, which are used to control the inlet dehumidification unit (1), the relay pressure regulating component (3), and the corridor reversible ventilation unit (2) to switch to the corresponding operating mode according to the pipe level instruction and the airflow conflict prohibition signal.

8. A low-carbon ventilation linkage system for underground space entrance-corridor with relay pressure regulating components according to claim 7, characterized in that, The low-carbon energy consumption coordination unit (8) includes an inlet dehumidification energy consumption detection module, a corridor ventilation energy consumption detection module, a low-carbon operation priority calculation module, an energy consumption feedback correction module, and an exhaust air capacity judgment module. It is used to detect inlet dehumidification energy consumption and corridor ventilation energy consumption, judge the corridor exhaust air capacity, and output a low-carbon operation priority correction signal to the hierarchical linkage control unit (7). The system linkage control platform (9) includes a data receiving module (9-1), a strategy generation module (9-2), an execution control module (9-3), an operation record module (9-4), and a fault alarm module (9-5). The data receiving module (9-1) is used to receive data from the entrance-corridor linkage sensing unit (4), the wet load takeover judgment unit (5), the airflow anti-counteracting interlock unit (6), and the low-carbon energy consumption coordination unit (8). The strategy generation module (9-2) is used to generate linkage control strategies. The execution control module (9-3) is used to output execution commands to the entrance moisture interception unit (1), the corridor reversible ventilation unit (2), and the relay pressure regulating component (3).

9. A low-carbon ventilation linkage system for underground space entrance-corridor with relay pressure regulating components according to claim 8, characterized in that, The hierarchical linkage control unit (7) operates in the following mode: Independent moisture interception mode at the first inlet: When the moisture saturation of the moisture interception unit (1) is lower than the set threshold, the humidity of the air after moisture interception detected by the inlet overflow sampling port (3-1) is lower than the set threshold, and the humidity of the relay buffer chamber (3-2) does not increase, the independent moisture interception control module (7-1) at the first inlet controls the inlet moisture interception unit (1) to operate independently, the corridor reversible ventilation unit (2) maintains a low-speed induction or flat-peak low-carbon state, and the pipe air valve (3-3) is closed or slightly open; Secondary corridor auxiliary suction mode: When the humidity rises and the wet load begins to accumulate in the relay buffer chamber (3-2) when the inlet overflow sampling port (3-1) detects the increase in humidity, the secondary corridor auxiliary suction control module (7-2) controls the pipe air valve (3-3) to partially open, and the reversible air duct component of the corridor reversible ventilation unit (2) adjacent to the underground space entrance B switches to a micro negative pressure suction state, and the deep part of the underground connecting corridor D maintains a low speed induction state; Three-level entrance isolation pipe connection mode: When the entrance moisture interception unit (1) is close to saturation, the humidity of the relay buffer chamber (3-2) continues to rise, and the differential pressure detection device (3-5) detects that the airflow has a tendency to diffuse to the depth of the underground connecting corridor D, the three-level entrance isolation pipe connection control module (7-3) controls the pipe connection air valve (3-3) to be fully opened or opened in stages, forming a micro negative pressure suction zone in the section adjacent to the entrance B of the underground space, forming a micro positive pressure barrier in the depth of the underground connecting corridor D, and the anti-backflow check component (3-4) is activated; Low-peak collaborative regeneration mode: When the entrance passenger flow decreases, the outer dew point decreases, the moisture storage component needs to be regenerated and the corridor exhaust branch has exhaust capacity, the low-peak collaborative regeneration control module (7-4) controls the entrance low-peak dehumidification component, bypass regeneration interface (3-6), relay dehumidification branch (3-7) and corridor exhaust branch to operate collaboratively, and the reversible wind duct component adjacent to the corridor switches to the same direction exhaust, closed or anti-backflow state; Corridor priority ventilation mode: When the entrance moisture load is low and the environmental load in the underground connecting corridor D is high, the entrance moisture interception unit (1) remains on standby or low-speed monitoring, the relay pressure regulating component (3) remains closed or in monitoring state, and the corridor reversible ventilation unit (2) performs air supply, exhaust, low-speed induction or closure control according to the corridor passenger flow tide and environmental load. Emergency Priority Mode: When an emergency occurs, the emergency priority control module stops the low-carbon priority strategy. The inlet moisture interception unit (1), the relay pressure regulating component (3) and the corridor reversible ventilation unit (2) all obey the fire smoke exhaust and personnel evacuation safety logic, and the inlet low-peak moisture exhaust component stops operating.

10. A low-carbon ventilation linkage system for underground space entrance-corridor with a relay pressure regulating component according to claim 9, characterized in that, The inlet moisture interception capacity determination module (5-1) determines whether the inlet moisture interception unit (1) can independently handle the current damp heat load based on the outer dew point, inlet surface temperature, air humidity after inlet moisture interception and moisture storage saturation. The moisture load overflow risk assessment module (5-2) determines whether there is a risk of moisture and heat load overflowing into the underground connecting corridor D based on the detection results of the inlet overflow sampling port (3-1), the humidity of the relay buffer chamber (3-2), the detection results of the differential pressure detection device (3-5), the inlet passenger flow intensity, and the humidity gradient of the adjacent section of the corridor. The low-peak regeneration window assessment module (5-4) determines whether the inlet low-peak dehumidification component is allowed to perform low-peak coordinated regeneration through the bypass regeneration interface (3-6) and the relay dehumidification branch (3-7) based on the inlet passenger flow intensity, the outer dew point, the corridor differential pressure status, the exhaust capacity of the corridor exhaust branch, and the system energy consumption status. The pipe connection level assessment module (5-5) determines whether the system enters the first-level inlet independent moisture interception, the second-level corridor auxiliary suction, or the third-level inlet isolation pipe connection based on the above assessment results. The airflow anti-counteracting interlocking unit (6) performs interlocking control according to the following logic: when the inlet moisture interception unit (1) is in the attached moisture interception state, the conflict operation prohibition module (6-5) prohibits the reversible wind channel component adjacent to the underground space entrance B in the corridor reversible ventilation unit (2) from strongly supplying air to the underground space entrance B; when the inlet low-peak dehumidification component is running, the dehumidification anti-backflow control module (6-3) prohibits the corridor reversible ventilation unit (2) from forming a negative pressure path that draws the dehumidified airflow back to the underground main space E; when the corridor enters the emergency smoke exhaust state, the supply and exhaust interlocking module (6-4) and the conflict operation prohibition module (6-5) control the inlet low-peak dehumidification component to suspend operation; The low-carbon operation priority calculation module of the low-carbon energy consumption coordination unit (8) determines the operation priority of the inlet moisture interception unit (1), the relay pressure regulating component (3) and the corridor reversible ventilation unit (2) based on the inlet moisture discharge energy consumption, corridor ventilation energy consumption, inlet moisture load overflow risk, corridor environmental load and exhaust margin. When the inlet moisture interception capacity is sufficient, the corridor intervention is reduced. When the overflow risk increases, only the adjacent corridor section is controlled to take over, so as to avoid the large air volume operation of the entire corridor.

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